Ghost Videos: Mexico City Ghost Sighting

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This Ghost Video was taken in Mexico City where a security guard had been killed. You can see that he appears to still be making his rounds. The second time around the ghost seems to be sprinting as if something were chasing it. Could the deceased security guard be replaying the night he was killed, still fleeing his attackers? This video could be a classic example of a residual haunting. What do you think?